Desenvolvida a partir da percepção de que o geofísico do sertão e do litoral nordestino brasileiro influenciaram as composições de Oswaldo de Souza (1904-1995), natural do Rio Grande do Norte, esta dissertação examina as canções de Oswaldo de Souza e Waldemar Henrique a fim de identificar aspectos em comum, listando elementos geofísicos da região norte e nordeste do Brasil pertinentes a ambos os compositores. Esta pesquisa também aborda as canções no que se refere às relações entre poema e música, extraindo delas indicações interpretativas baseadas nas características relacionadas ao geofísico a que os compositores se reportam. Esta análise foi realizada com base no Referencial de Análise de Obras Corais do Professor Dr. Marco Antônio da Silva Ramos da Universidade de São Paulo (USP); na dissertação de mestrado da cantora e professora Márcia Jorge Aliverti, da Universidade Federal do Pará, em sua dissertação de mestrado sobre as canções Lendas Amazônicas de Waldemar Henrique, defendida na Escola de Comunicações e Artes da USP em 2003; na pesquisa biográfica realizada pelo professor e músico Cláudio Augusto Pinto Galvão; na entrevista com a professora e cantora Maria de Fátima de Brito realizada em 2009 e no parecer Técnico Pericial que ratifica que as anotações encontradas nas partituras das canções Juazeiro e Jangada foram, de fato, de Oswaldo de Souza. Este tema nos conduz a uma reflexão mais profunda sobre como entender o processo de composição nas canções de Oswaldo de Souza e sua confluência com a obra de Waldemar Henrique. / Building from the notion that the geophysics of the Brazilian northeastern backwoods and cost have influenced composer Oswaldo de Souza (1904 1995), who is originally from Rio Grande do Norte, this dissertation examines songs by Oswaldo de Souza and Waldemar Henrique in order to find aspects they have in common, listing geophysical elements of the northern and northeastern parts of Brazil relevant to both composers. This research also approaches the songs regarding the relations between the poem and the music, extracting interpretative hints based on characteristics related to the geophysics referred to by the composers. The analyzes was made with reference to the Referencial de Análise de Obras Corais by Professor D. Marco Antonio da Silva Ramos of the USP University of São Paulo; to the dissertation of singer and professor Márcia Jorge Aliverti, of the Federal University of Pará on the songs Legends of the Amazon by Waldemar Henrique, submitted at the School of Communication and Art at USP, in 2003; to a bibliographic research conducted by professor and musician Claudio Augusto Pinto Galvão; to an interview given by professor and singer Maria de Fátima de Brito in 2009 and to a juridical report that states that hand-written notes on the songs Juazeiro and Jangada were actually of Oswaldo de Souza. This theme leads us into a deeper reflection on how to understand the process in composition in Oswaldo de Souzas songs and its convergence with Waldemar Henriques work.

Desenvolvida a partir da percepção de que o geofísico do sertão e do litoral nordestino brasileiro influenciaram as composições de Oswaldo de Souza (1904-1995), natural do Rio Grande do Norte, esta dissertação examina as canções de Oswaldo de Souza e Waldemar Henrique a fim de identificar aspectos em comum, listando elementos geofísicos da região norte e nordeste do Brasil pertinentes a ambos os compositores. Esta pesquisa também aborda as canções no que se refere às relações entre poema e música, extraindo delas indicações interpretativas baseadas nas características relacionadas ao geofísico a que os compositores se reportam. Esta análise foi realizada com base no Referencial de Análise de Obras Corais do Professor Dr. Marco Antônio da Silva Ramos da Universidade de São Paulo (USP); na dissertação de mestrado da cantora e professora Márcia Jorge Aliverti, da Universidade Federal do Pará, em sua dissertação de mestrado sobre as canções Lendas Amazônicas de Waldemar Henrique, defendida na Escola de Comunicações e Artes da USP em 2003; na pesquisa biográfica realizada pelo professor e músico Cláudio Augusto Pinto Galvão; na entrevista com a professora e cantora Maria de Fátima de Brito realizada em 2009 e no parecer Técnico Pericial que ratifica que as anotações encontradas nas partituras das canções Juazeiro e Jangada foram, de fato, de Oswaldo de Souza. Este tema nos conduz a uma reflexão mais profunda sobre como entender o processo de composição nas canções de Oswaldo de Souza e sua confluência com a obra de Waldemar Henrique. / Building from the notion that the geophysics of the Brazilian northeastern backwoods and cost have influenced composer Oswaldo de Souza (1904 1995), who is originally from Rio Grande do Norte, this dissertation examines songs by Oswaldo de Souza and Waldemar Henrique in order to find aspects they have in common, listing geophysical elements of the northern and northeastern parts of Brazil relevant to both composers. This research also approaches the songs regarding the relations between the poem and the music, extracting interpretative hints based on characteristics related to the geophysics referred to by the composers. The analyzes was made with reference to the Referencial de Análise de Obras Corais by Professor D. Marco Antonio da Silva Ramos of the USP University of São Paulo; to the dissertation of singer and professor Márcia Jorge Aliverti, of the Federal University of Pará on the songs Legends of the Amazon by Waldemar Henrique, submitted at the School of Communication and Art at USP, in 2003; to a bibliographic research conducted by professor and musician Claudio Augusto Pinto Galvão; to an interview given by professor and singer Maria de Fátima de Brito in 2009 and to a juridical report that states that hand-written notes on the songs Juazeiro and Jangada were actually of Oswaldo de Souza. This theme leads us into a deeper reflection on how to understand the process in composition in Oswaldo de Souzas songs and its convergence with Waldemar Henriques work.

Les instruments et objets sonores du monde préhispanique mexicain ne sont pas couramment utilisés dans la création de la musique classique de notre époque. Cette utilisation sonore peut causer certains problèmes qui restent à être résolus pour pouvoir les utiliser de façon intégrale et universelle dans la réalité de la création musicale contemporaine. Cette thèse s'inscrit dans le cadre de l’introduction des sonorités du Mexique préhispanique dans l'orchestration moderne. Elle consiste en une recherche musicale de création et d’intégration des nouvelles propositions orchestrales dans une perspective contemporaine. Je me suis donc attachée dans ce travail, à analyser les propriétés sonores des dits instruments, ainsi qu’à confronter deux mondes différents dont les sonorités de base sont simples et d’aspect archaïque. Ce travail comporte sept chapitres, incluant l’analyse compositionnelle de quatre de mes œuvres. Il vise à proposer une démarche de création musicale en s’inspirant des éléments simples d’itération (entre autres) qui sont très caractéristiques des sifflets et des autres objets sonores mexicains. En introduisant certains instruments anciens dans un contexte tout à fait différent de leur origine, ces découvertes sonores m’auront permis de transformer mon écriture musicale. Œuvres soumises:  Nahui Ocelotl, pour percussion solo et instruments préhispaniques  El Evangelio de Judas, pour ensemble  Ikal pour trompette maya et percussion  Stáku pour ensemble Mots-clés : orchestration, composition, percussion, instruments préhispaniques, analyse musicale, itération, ingénieur Roberto Velázquez. / The musical instruments and objects of the Mexican pre-Hispanic world are not commonly used in the creation of modern classical music. The use of these sounds may cause some problems, which remain to be solved in order to use them fully and universally in contemporary musical creation. This thesis fits into the introduction of pre-Hispanic Mexican sounds in modern orchestration. It consists of a musical research of creation and integration of new orchestral proposals in a contemporary perspective. So far, my concern has been to analyse the sound properties of these instruments to confront them with two different worlds, whose basic nature is simple and take us to an archaic reality. This work is based on seven chapters, including the compositional analysis of four of my musical creations. It aims to propose an approach to musical creation by drawing simple iteration elements (among others), which are very characteristic of Mexican whistles and other sound objects. This sound discovery allowed me to create, compare and make several corrections in my musical language for assessing the sound phenomena of some ancient instruments by introducing them into a different context to their own origin. List of works submitted:  Nahui Ocelotl, pour percussion solo et instruments préhispaniques  El Evangelio de Judas, pour ensemble  Ikal pour trompette maya et percussion  Stáku pour ensemble Keywords: orchestration, composition, percussion, pre-Hispanic musical instruments, musical analyses, iteration, engineer Roberto Velázquez.